package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee) {
        //1、将页面提交的密码password进行md5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        //2、根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>(); // ????
        queryWrapper.eq(Employee::getUsername, employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);
        //3、如果没有查询到则返回登录失败结果
        if (emp == null) {
            return R.error("登录失败");
        }
        //4、密码比对，如果不一致则返回登录失败结果
        if (!emp.getPassword().equals(password)) {
            return R.error("密码错误,登录失败!");
        }
        //5、查看员工状态，如果为已禁用状态，则返回员工已禁用结果
        if (emp.getStatus() == 0) {
            return R.error("对不起,当前账号已被封禁!");
        }
        //6、登录成功，将员工id存入Session并返回登录成功结果
        request.getSession().setAttribute("employee", emp.getId());
        return R.success(emp);
    }

    @PostMapping("/logout")
    public R logout(HttpServletRequest request) {
        //清理Session中保存的当前登录员工的id
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    @PostMapping
    public R addSave(@RequestBody Employee employee) {
        log.info("新增员工，员工信息：{}",employee.toString());
        //设置初始密码123456，需要进行md5加密处理
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

        boolean save = employeeService.save(employee);
        return save ? R.success("新增员工成功") : R.error("添加失败");
    }

    @GetMapping("/page")
    public R<Page> All(int page, int pageSize, String name) {
        log.info("page = {},pageSize = {},name = {}", page, pageSize, name);
        //构造分页构造器
        Page page1 = new Page(page, pageSize);
        //构造条件构造器
        LambdaQueryWrapper<Employee> wrapper = new LambdaQueryWrapper();
        //添加过滤条件
        wrapper.like(StringUtils.isNotEmpty(name), Employee::getName, name);
        //添加排序条件
        wrapper.orderByDesc(Employee::getUpdateTime);
        //执行查询
        employeeService.page(page1, wrapper);
        return R.success(page1);

    }

    @PutMapping
    public R update(HttpServletRequest request, @RequestBody Employee employee) {
        log.info(employee.toString());
        Long employeeId = (Long) request.getSession().getAttribute("employee");
        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(employeeId);
        employeeService.updateById(employee);
        return R.success("修改员工信息成功");
    }

    @GetMapping("/{id}")
    public R getId(@PathVariable long id) {
        log.info("根据id查询员工信息...");
        Employee byId = employeeService.getById(id);
        if (byId != null) {
            return R.success(byId);
        } else {
            return R.error("没有查询到对应员工信息");
        }
    }


}    